Method applyCurrentView

src/SFML/Graphics/RenderTarget.cpp:658–695

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void RenderTarget::applyCurrentView()
{
    // Set the viewport
    const IntRect viewport    = getViewport(m_view);
    const int     viewportTop = static_cast<int>(getSize().y) - (viewport.position.y + viewport.size.y);
    glCheck(glViewport(viewport.position.x, viewportTop, viewport.size.x, viewport.size.y));

    // Set the scissor rectangle and enable/disable scissor testing
    if (m_view.getScissor() == FloatRect({0, 0}, {1, 1}))
    {
        if (!m_cache.enable || m_cache.scissorEnabled)
        {
            glCheck(glDisable(GL_SCISSOR_TEST));
            m_cache.scissorEnabled = false;
        }
    }
    else
    {
        const IntRect pixelScissor = getScissor(m_view);
        const int     scissorTop   = static_cast<int>(getSize().y) - (pixelScissor.position.y + pixelScissor.size.y);
        glCheck(glScissor(pixelScissor.position.x, scissorTop, pixelScissor.size.x, pixelScissor.size.y));

        if (!m_cache.enable || !m_cache.scissorEnabled)
        {
            glCheck(glEnable(GL_SCISSOR_TEST));
            m_cache.scissorEnabled = true;
        }
    }

    // Set the projection matrix
    glCheck(glMatrixMode(GL_PROJECTION));
    glCheck(glLoadMatrixf(m_view.getTransform().getMatrix()));

    // Go back to model-view mode
    glCheck(glMatrixMode(GL_MODELVIEW));

    m_cache.viewChanged = false;
}


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